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Applications of a nuclear technique for depth-sensitive hydrogen analysis : trapped H in lunar samples and the hydration of terrestrial obsidian

Citation

Leich, Douglas Albert (1974) Applications of a nuclear technique for depth-sensitive hydrogen analysis : trapped H in lunar samples and the hydration of terrestrial obsidian. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/BVB9-FJ36. https://resolver.caltech.edu/CaltechTHESIS:11172015-101124496

Abstract

The resonant nuclear reaction 19F(p,αy)16O has been used to perform depth-sensitive analyses for both fluorine and hydrogen in solid samples. The resonance at 0.83 MeV (center-of-mass) in this reaction has been applied to the measurement of the distribution of trapped solar protons in lunar samples to depths of ~1/2µm. These results are interpreted in terms of a redistribution of the implanted H which has been influenced by heavy radiation damage in the surface region. Fluorine determinations have been performed in a 1-µm surface layer on lunar and meteoritic samples using the same 19F(p,αy)16O resonance. The measurement of H depth distributions has also been used to study the hydration of terrestrial obsidian, a phenomenon of considerable archaeological interest as a means of dating obsidian artifacts. Additional applications of this type of technique are also discussed.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Tombrello, Thomas A.
Thesis Committee:
  • Unknown, Unknown
Defense Date:20 November 1973
Funders:
Funding AgencyGrant Number
NDEAUNSPECIFIED
CaltechUNSPECIFIED
NSFGP-28027
Record Number:CaltechTHESIS:11172015-101124496
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:11172015-101124496
DOI:10.7907/BVB9-FJ36
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9281
Collection:CaltechTHESIS
Deposited By: Dan Anguka
Deposited On:17 Nov 2015 21:08
Last Modified:20 Dec 2019 19:35

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